Matrox Electronic Systems II 사용자 설명서
Matrox Meteor-II MJPEG Module 73
JPEG Processor
During compression, the JPEG Processor receives the 8 x 8
pixel blocks and compresses them according the JPEG
standard. Both lossy and lossless formats are supported.
During decompression, the JPEG Processor decompresses the
data, and transfers the 8 x 8 pixel blocks to the Color Space
Converter.
pixel blocks and compresses them according the JPEG
standard. Both lossy and lossless formats are supported.
During decompression, the JPEG Processor decompresses the
data, and transfers the 8 x 8 pixel blocks to the Color Space
Converter.
MJPEG FPGA
The MJPEG FPGA controls the direction of compressed and
decompressed data and generates control signals on the
module. It implements a bus handshake with the VIA on the
baseboard to access the SGRAM. The SGRAM on the baseboard
is used to store the compressed data.
decompressed data and generates control signals on the
module. It implements a bus handshake with the VIA on the
baseboard to access the SGRAM. The SGRAM on the baseboard
is used to store the compressed data.
Encoding MJPEG
During MJPEG (interlaced) compression, the baseboard grabs
a field of data. This data enters the module through the
Meteor-II grab port, and passes through the Color Space
Converter, the JPEG Processor, and finally exits the module to
the Host through the memory port on the MJPEG FPGA chip.
a field of data. This data enters the module through the
Meteor-II grab port, and passes through the Color Space
Converter, the JPEG Processor, and finally exits the module to
the Host through the memory port on the MJPEG FPGA chip.
Encoding JPEG
During JPEG (non-interlaced) compression, the baseboard
grabs an entire frame of data. This data enters the module
through the memory port on the MJPEG FPGA chip and passes
through the Color Space Converter. From there, JPEG
compression follows the same path as MJPEG compression.
Compressing an archived video stream is supported under
JPEG compression.
grabs an entire frame of data. This data enters the module
through the memory port on the MJPEG FPGA chip and passes
through the Color Space Converter. From there, JPEG
compression follows the same path as MJPEG compression.
Compressing an archived video stream is supported under
JPEG compression.
Host
Host